Trying to send sms programatically but it's throwning an null pointer exception

Question

I am Trying to loop through a list of numbers and send them a message but somehow my code is throwing a null pointer exception and i can't figure out where is the problem.

here the code

import java.util.ArrayList;
import java.util.List;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.IntentFilter;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.Intent;
import android.telephony.SmsManager;
import android.widget.Toast;

public class MSGHandler {
    String SENT = "SMS_SENT";
    String DELIVERED = "SMS_DELIVERED";
    public BroadcastReceiver smsDeliveredReceiver,smsSentReceiver;


public MSGHandler(Context c,List<String> Name,List<String> Number,String Message)
{
    int Limit = Name.size();
    for(int i = 0; i < Limit;i++)
    {
        if(Number.get(i).length() > 0)
        {
            SmsManager sms = SmsManager.getDefault();
             PendingIntent piSent=PendingIntent.getBroadcast(c, 0, new Intent(SENT), 0);
                PendingIntent piDelivered=PendingIntent.getBroadcast(c, 0, new Intent(DELIVERED),0);

                //---when the SMS has been sent---
                smsSentReceiver = new BroadcastReceiver(){
                    @Override
                    public void onReceive(Context arg0, Intent arg1) {
                        switch (getResultCode())
                        {
                            case Activity.RESULT_OK:

                                break;
                            case SmsManager.RESULT_ERROR_GENERIC_FAILURE:

                                break;
                            case SmsManager.RESULT_ERROR_NO_SERVICE:

                                break;
                            case SmsManager.RESULT_ERROR_NULL_PDU:

                                break;
                            case SmsManager.RESULT_ERROR_RADIO_OFF:

                                break;
                        }
                    }
                };

                //---when the SMS has been delivered---
                smsDeliveredReceiver = new BroadcastReceiver(){
                    @Override
                    public void onReceive(Context arg0, Intent arg1) {
                        switch (getResultCode())
                        {
                            case Activity.RESULT_OK:

                                break;
                            case Activity.RESULT_CANCELED:

                                break;                        
                        }
                    }
                };
                c.registerReceiver(smsSentReceiver, new IntentFilter("SMS_SENT"));
                c.registerReceiver(smsDeliveredReceiver, new IntentFilter("SMS_DELIVERED"));
                sms.sendTextMessage(Number.get(i), null, Name.get(i)+Message, piSent, piDelivered);  

        }
    }
}
}

I am Calling this classes in an activity on a button click. Like this

Dialog Alert = new Dialog(MainActivity.this);
            try
            {
                MSGHandler sms = new MSGHandler(MainActivity.this,DBHandler.Contacts_Name_List,DBHandler.Contacts_Number_List,"HII!!!!");
            }catch(Exception e)
            {
                Alert.setTitle(e.toString());
            }
            Alert.show();

I am Using Eclipse and using my device as an emulator

here's log

 error opening trace file: No such file or directory (2)

  loaded /system/lib/egl/libEGL_mali.so

 loaded /system/lib/egl/libGLESv1_CM_mali.so

 loaded /system/lib/egl/libGLESv2_mali.so
  Enabling debug mode 0

(When the exception is thrown in the app .. log displays nothing )

Here are the ADb logs after i try to send the msg and the exception is thrown

Any Solutions?

Answer 1

Well a nice sleep helped me alot and i found out that the exception was being thrown because i was trying to message on a blank number i.e " " a space

and the solution was using

 if(Number.get(i).trim().length() > 0)

instead of

 if(Number.get(i).length() > 0)